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1.
| 1. | The condensation of 1,2-hydroxylamino oximes with biacetyl leads to 1-hydroxy-2-acetyl-2,4,5,5-tetrasubstituted 3-imidazoline 3-oxides. |
| 2. | When 1-hydroxy-2-acetyl-2,5,5-trimethyl-4-phenyl-3-imidazoline 3-oxide is oxidized the CH3CO group is cleaved to give the 5H-imidazole 1,3-dioxide. |
| 3. | Stable nitroxyl radicals were obtained when the 1-hydroxy-2-oximiaoethyl-2,4,5,5-tetrasubstituted 3-imidazoline 3-oxides are oxidized. |
2.
L. D. Belyakova G. A. Gerasimova L. T. Zhuravlev G. V. Kudryavtsev G. V. Lisichkin N. S. Ovchinnikova N. P. Platonova T. I. Shevchenko 《Russian Chemical Bulletin》1989,38(5):885-891
| 1. | When silicas are modified with amines, not all surface silanol groups participate in the chemical reaction. |
| 2. | When amine-modified silica gels are heated, water is produced; the maximum rate of the formation of gas occurs at 625 and 750 K. Destruction of the modifying layer begins with the liberation of ammonia at T > 640 K. |
| 3. | Adsorption of SO2 and CO2 on aminated silicas is determined by the surface concentration of amino groups, by their nature, and by their mutual position. |
3.
M. A. Dzyubina G. N. Kuz'mina B. I. Kolobkov A. I. Nekhaev 《Russian Chemical Bulletin》1988,37(10):2057-2062
| 1. | The activation energy for the thermal decomposition of complexes with Fe2(CO)6S2 frameworks amounts to 103–144 kJ/mole. |
| 2. | Decarbonylation and splitting off of the hydrocarbon part of the molecule is the general pattern of behavior of iron carbonyl compounds with sulfur ligands on heating and under electron bombardment. |
| 3. | In complexes containing a norbornadiene fragment, a reverse Diels-Alder reaction takes place under electron bombardment, in addition to splitting off of norbornadiene. |
4.
| 1. | Benzoyl peroxide and the Fe(CO)5 + DMF system initiate the addition of iodochloromethane to vinyltrimethylsilane and 1-heptene with cleavage of the C-I bond in iodochloromethane. |
| 2. | The 1,3-iodochloro adducts disproportionate by the action of the Fe(CO)5 + DMF system at 140°C to form 1,3-diiodo and 1,3-dichloro derivatives. |
5.
B. M. Lerman Z. Ya. Aref'eva L. I. Umanskaya G. A. Tolstikov 《Russian Chemical Bulletin》1976,25(11):2353-2355
| 1. | The reaction between 1-chloro-1,3,5,7-tetramethyl-2,4,6,8-tetrathioprotoadamantane and mercapto-compounds or weakly basic amines produces sulfides and amine derivatives with the protostructure. When (II) reacts with strongly basic amines, dehydrochloridation takes place. |
| 2. | The reaction between 9-bromo-1,3,5,7-tetramethyl-2,4,6,8-tetrathioadamantane and thioacetic acid in ethanol in presence of alkali proceeds by regrouping, with the formation of the thiolacetate of 2,4,6,8-tetra-thioprotoadamantane. |
6.
P. P. Levin V. A. Kuz'min R. M. Fatkulbayanov M. F. Budyka M. V. Alfimov 《Russian Chemical Bulletin》1989,38(2):225-231
| 1. | Molecules of acridine and chloroacridine in the triplet state form triplet exciplexes of the radical ion pair type with tertiary aromatic amines. Proton transfer from the radical cation to the radical anion with formation of neutral radicals is the basic pathway of quenching of these exciplexes in a nonsolvating medium. In the presence of an alcohol, the triplet exciplexes disappear due to protonation of the radical anion in the exciplex. |
| 2. | Quenching of triplet states of acridine and chloroacridine by secondary aromatic amines take place by transfer of an H atom from the amine regardless of the nature of the solvent. |
| 3. | The singlet excited state is the most probable reactive state of 9-chloroacridine in photoreduction and photosubstitution reactions with aromatic amines. |
7.
Carbon dioxide fixation by microalgae photosynthesis using actual flue gas discharged from a boiler 总被引：2，自引：0，他引：2
Matsumoto Hiroyo Shioji Norio Hamasaki Akihiro Ikuta Yoshiaki Fukuda Yoshinori Sato Minoru Endo Noriyoshi Tsukamoto Toshiaki 《Applied biochemistry and biotechnology》1995,(1):681-692
To mitigate CO2 discharged from thermal power plants, studies on CO2 fixation by the photosynthesis of microalgae using actual exhaust gas have been carried out. The results are as follows.
相似文献
| 1. | A method is proposed for evaluating the maximum photosynthesis rate in the raceway cultivator using only the algal physical properties; |
| 2. | Outdoor cultivation tests taking actual flue gas were performed with no trouble or break throughout 1 yr using the strain collected in the test; |
| 3. | The produced microalgae is effective as solid fuel; and |
| 4. | The feasibility studies of this system were performed. The system required large land area, but the area is smaller than that required for other biomass systems, such as tree farms. |
8.
I. V. Anonimova N. A. Chadaeva L. K. Yuldasheva S. G. Vul'fson A. N. Vereshchagin B. A. Arbuzov 《Russian Chemical Bulletin》1976,25(12):2519-2524
| 1. | It has been shown that 2-bromo-l,3,2-dioxaarsenanes exist in chair conformation with axially oriented As-Br bonds. |
| 2. | Polarity and polarizability parameters have been found for the As-O and As-Br bonds in 2-bromo-l,3,2-dioxaarsenanes. |
| 3. | The so-called -effect is stronger in the O2AsBr group than in the O2AsCl group. |
9.
N. F. Yudanov E. G. Boguslavskii I. I. Yakovlev S. P. Gabudar 《Russian Chemical Bulletin》1988,37(2):200-203
| 1. | A method has been developed for the intercalation of solid substances from solutions in organic solvents into graphite fluoride C2Fx. |
| 2. | Molecules of inserted paramagnetic copper complexes and nitroxyl radicals assume oriented positions between the structural layers in graphite fluoride. |
| 3. | The planes of molecules of bis-chelate Cu(II) complexes with acetylacetone, o-hydroxyquinoline, and phenylsalicylaldimine were determined to lie parallel to the C2Fx planes. |
| 4. | A method has also been suggested for the preparation of samples from C2Fx·yA compounds with a higher degree of texturizing (more nearly complete orientation) than can be achieved by pelletizing. |
10.
N. E. Kolobova V. V. Derunov T. A. Isaeva V. N. Khandozhko 《Russian Chemical Bulletin》1988,37(2):353-356
| 1. | Propargylamines react with CpMn(CO)2(THF) to form n-amine complexes which are readily isomerized to the corresponding -aminoacetylene complexes. |
| 2. | Propargylamines react with BrRe(CO)5 in the presence of acetylacetone to give nalkenylamine complexes AcacRe(CO)3NH(R)CH2CH-CH2. |
| 3. | The first examples of cobalt -aminoacetylene complexes Co2(CO)6(4-R2NCH2CCH) have been obtained. |
11.
Ya. T. Éidus A. L. Lapidus V. I. Mashinskii L. L. Krasnova 《Russian Chemical Bulletin》1976,25(6):1261-1264
| 1. | The activity of cobalt-group II metal oxide catalysts in the hydropolymerization reactions of C2-C4 olefins, initiated by CO at 190°, depends on the nature of the oxide and decreases when going from BeO to BaO. |
| 2. | In their reactivity the olefins fall into the order: C2 > C3H6 >-C4H8 > i-C4H8. |
| 3. | The degree of reduction of the cobalt found in the catalyst depends on the nature of the employed oxide and (toes not determine its activity. |
12.
B. K. Nefedov N. S. Sergeeva T. V. Zueva E. M. Shutkina Ya. T. Eidus 《Russian Chemical Bulletin》1976,25(3):565-569
| 1. | Methanol, containing 10–20 mole % of CH3I, is carbonylated to methyl acetate in the presence of impregnated Eh-zeolite NaX catalyst at 230–250° and atmospheric pressure. |
| 2. | The specific (per gram of Rh) rate of methyl acetate formation is antibatic to the Rh content in the catalyst, it increases with increase in the methanol contact time, and shows little change in the range 230–250°. |
| 3. | The rate of forming the sole secondary product, namely dimethyl ether, decreases with increase in the amount of Rh and the methanol contact time. |
| 4. | CH2I is an astoichiometric component of the reaction. |
13.
| 1. | During shaping of titanium dioxide there are formed both paramagnetic (NO 3 2– , NO2, and NO) and nonparamagnetic (NO3–) forms of nitrogen oxides, stabilized in the TiO2 lattice. |
| 2. | In CO the radicals (NO 3 2– and NO2 are reduced to NO. |
| 3. | It is postulated that during shaping of TiO2 the NO2 molecules formed during oxidation of NH3 may be stabilized both on the lattice O2– and on Ti4+. |
14.
| 1. | Indium atoms have been obtained in aqueous solutions of univalent indium by pulse radiolysis. |
| 2. | In0 reacts with In+ to form the dimer In 2 + . |
| 3. | The optical characteristics of these particles, the rate constants for their formation and loss, as well as the oxidation-reduction potentials have been determined. |
15.
| 1. | The existence of synergism is demonstrated; the activity of Pd-Tc/carrier catalysts in the dehydrogenation of hydrocarbons considerably exceeds that of monometallic catalysts. The most active catalysts are those with PdTc ratios from 11 to 23. |
| 2. | In terms of reactivity on Pd-Tc catalysts, the hydrocarbons are arranged as follows: cyclohexene > cyclohexane > methylcyclohexane > ethylcyclohexane > n-hexane. |
| 3. | Activity in the dehydrogenation of cyclohexane varies as follows: Pd-Tc/-Al2O3 > Pd-Tc/MgO > Pd-Tc/TiO2 > Pd-Tc/Y2O3 > Pd-Tc/SiO2. |
| 4. | A decrease in CO chemisorptive capacity on bimetallic catalysts compared to monometallic catalysts is established. |
16.
| 1. | In inhibition of oxidation of ethylbenzene and isopropyl alcohol by secondary aromatic amines, organic acids prevent transformation of diarylaminyl radicals into nitroxyl radicals. |
| 2. | An acid increases the efficiency and duration of the inhibiting effect of secondary aromatic amines on oxidation of isopropyl alcohol, since it causes formation of quinone imine, a product of transformation of the amine which has high inhibiting activity. |
17.
G. K. -I. Magomedov L. V. Morozova V. N. Kalinin L. I. Zakharkin 《Russian Chemical Bulletin》1976,25(11):2419-2421
| 1. | Vinyl- and isopropenyl-o-carborane are hydrogenated under the reaction conditions for the hydroformylation and carboxylation of olefins in the presence of cobalt or rhodium carbonyls. |
| 2. | A mechanism was proposed for the hydrogenation of olefin-o-carboranes in alcohol solutions under CO pressure. |
18.
G. A. Artamkina A. Yu. Mil'chenko I. P. Beletskaya O. A. Reutov 《Russian Chemical Bulletin》1988,37(12):2550-2556
| 1. | The kinetics of reactions of alkali metal salts of 9-carbomethoxy- and 9-cyanofluorene with para-nitrofluorobenzene and of Me3SnM with pentafluoropyridine have been studied. |
| 2. | In the case of carbanions the free anions are more reactive, while in the case of Me3SnM the corresponding tight (contact) ion pairs are more reactive. |
| 3. | The effect of the leaving group (on reactivity) was investigated using the reactions of pentafluorochlorobenzene with the K salts of 9-carbomethoxyfluorene and cyclopentadienylirondicarbonyl anions as examples. |
| 4. | The reaction mechanism has been shown to depend on the nature of the nucleophile. |
19.
| 1. | The authors have studied the formation of electron and hole paramagnetic centers in gamma-irradiated magnesium hydroxide and oxide with various degrees of dehydration. |
| 2. | Rise in the temperature of preliminary heat treatment of the magnesium oxide causes an increase in the radiation-chemical yield of FS + centers and a decrease in that of V su – centers. |
| 3. | The thermal stability of paramagnetic centers in magnesium oxide increases as the hydroxyl group content decreases. |
20.
É. D. Filippova N. D. Mitrofanova L. I. Martynenko V. I. Spitsyn 《Russian Chemical Bulletin》1976,25(1):4-7
| 1. | Complexes of the REE, Y, and Sc with hydroxyethylethylenediaminetriacetic acid have been isolated in solid form. The hydrate compositions of the complexes have been determined. |
| 2. | The La and Pr complexes form hydrates of different compositions. The LnL hydrates form slightly nonisostructural groups in the series La-Lu. |
| 3. | According to thermographic analysis data, the hydrate water in the LnL·nH2O complexes of different hydrate compositions is not bonded with the same firmness. |